US3659691A - Material supply chute - Google Patents

Material supply chute Download PDF

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Publication number
US3659691A
US3659691A US889590A US3659691DA US3659691A US 3659691 A US3659691 A US 3659691A US 889590 A US889590 A US 889590A US 3659691D A US3659691D A US 3659691DA US 3659691 A US3659691 A US 3659691A
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US
United States
Prior art keywords
chute
bar elements
end portions
rear end
bar
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US889590A
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English (en)
Inventor
Helmut Leutelt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HAZEMAG HARTZERKLEINERUNG
HAZEMAG HARTZERKLEINERUNGS-UND ZEMENT-MASCHINENBAU-GMBH
Original Assignee
HAZEMAG HARTZERKLEINERUNG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HAZEMAG HARTZERKLEINERUNG filed Critical HAZEMAG HARTZERKLEINERUNG
Application granted granted Critical
Publication of US3659691A publication Critical patent/US3659691A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/286—Feeding or discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/02—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft
    • B02C13/06—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor
    • B02C13/09—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor and throwing the material against an anvil or impact plate
    • B02C13/095—Disintegrating by mills having rotary beater elements ; Hammer mills with horizontal rotor shaft with beaters rigidly connected to the rotor and throwing the material against an anvil or impact plate with an adjustable anvil or impact plate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
    • B02C13/26—Details
    • B02C13/286—Feeding or discharge
    • B02C2013/28618—Feeding means
    • B02C2013/28672—Feed chute arrangements

Definitions

  • the invention relates generally to material supply chutes, and more particularly to material supply chutes which find advantageous use in rotary fragmentation mills.
  • the present invention has generally applicability in the field of material supply chutes.
  • rotary fragmentation mills where material moves along a chute towards a rotor onto which it falls and from which it is flung off to impinge against suitable wall means to thereby become fragmented, it is desirable that the material be supplied to the rotor evenly distributed over the entire axial length thereof. This is true particularly of rotors having a substantial axial length. It has been found, however, that this is difficult to accomplish.
  • the conveyor belts which supply the material to the chute along which it moves towards the rotor have a substantially smaller width than the axial length of the rotor and therefore supply the material to 'the middle of the supply chute which latter, even if it has a width corresponding to the axial length of the rotor, is incapable of distributing the material from the middle towards the opposite sides as the material moves from the inlet end to the outlet end of the chute.
  • the result of supplying material unevenly .distributed to the rotor, that is supplying more material to one axial increment of the rotor than to others, is that the contact portions--such as hammers or the like-provided on the circumference of the rotor undergo uneven wear by contact with the differently distributed material.
  • the size distribution of the fragmentation product obtained is disadvantageously influenced under these circumstances because the fragmentation chamber is normally delimited on the side opposite the outlet end of the chute by tiltable plates which are so arranged that their free ends are located very closely to the circumference of the rotor and define therewith only a narrow gap.
  • the contact portions on the circumference of the rotor are unevenly worn it is not possible to provide for a precise setting of this gap.
  • a further object of the invention is to provide such a material supply chute which can be used in conjunction with existing installations, requiring no auxiliary devices and leading to an even wear of the contact portions on rotors in fragmentation mills with which the chute may be utilized.
  • a material supply chute particularly for use with rotary fragmentation mills, which briefly stated comprises a plurality of discrete bar elements arranged in side-by-side relationship and together constituting a chute having a general plane. Means is provided mounting the bar elements for individual displacement with reference to and transversely of this general plane.
  • the bar elements may be of elastically yieldable material, such as rubber or synthetic plastic material of requisite mechanical strength. If this is the case, then they may be rigidly mounted at their rear end portions because their front portions can be deflected by virtue of the fact that the elements are elastically yieldable. If the elements are of nonresilient material then they must be mounted at their upper end portions in other manner, for instance pivotably.
  • FIG. 1 is a somewhat diagrammatic cross-section elevational view of a rotary fragmentation mill utilizing the material supply chute according to the present invention.
  • FIG. 2 is a section taken on the line A-B of FIG. 1.
  • reference numeral 1 identifies a housing in which there is mounted an axially elongated rotor 3.
  • the latter is rotatable about its own longitudinal axis in direction of the associated curved area (see FIG. 1) and carries on its circumference a plurality of holding structures 2 each of which is provided in the illustrated embodiment with an elongated bar-shaped contact portion 4.
  • the contact portions 4 are removably connected to the members 2, for instance by means of bolts 5 or in analogous manner.
  • Reference numeral 6 defines an inlet in the housing 1 of the rotary fragmentation mill shown in FIG; 1, and material to be subjected to fragmentation comminution enters through the inlet 6, falls onto the upper surface of the downwardly inclined material supply chute 7 and moves along the latter until it comes in contact with the circumference of the rotor 3 whose contact portions 4 fling it against the pivotably mounted plates 8 and 9 so that it becomes fragmented as a result of impact.
  • the space in which the fragmentation takes place is identified with reference numeral 10 and the once fragmented material leaves the space 10 through the gap 11 defined between the free edges of the plates 8 and 9 and the radially outermost edges of the contact portions 4.
  • This gap 1 1 is adjustable in the illustrated embodiment by means of the screw spindles 12 carrying the plates 8 and 9, and the adjustment-or readjustment-is carried out in dependence upon the degree of fineness of fragmentation particles too large to pass through the gap 11 are retained in the space 10 and continue to be subjected to further fragmentation until they are small enough to pass through the gap 1 1-and also in dependence upon progressive wear of the contact portions 4.
  • the contact portions 4 wear away, and as a result the gap 11 increases and the spindles 12 are then utilized for readjustment of the plates 8 and 9 so that the gap 11 again has its desired width.
  • a comminuting grate 13 is arranged partially below and partially surrounding the circumference of the rotor 3.
  • Such comminuting plates are known and it will be appreciated that the material passing through the gap 11 falls onto the grate l3 and there is further reduced in size in known manner.
  • the considerations with reference to the gap 11 between the rotor 3 and the plates 8 and 9 are also true with reference to the gap between the comminuting grate 13 and the rotor 3, and here, again, adjustments may be carried out and must be carried out as necessary.
  • the material supply chute 7 is constructed in accordance with the present invention. As illustrated it is composed of a plurality of elongated bar elements 7' arranged in side-by-side relationship. These bar elements 7 each have rear end portions remote from and front end portions adjacent to the rotor 3. They are provided at their underside at least at the rear end portions-but preferably also at the front end portions as illustrated-with downwardly open cut-outs 15. The cut-outs 15 at the rear end portions straddle a ridge 14 of a support member 16 which in the illustrated embodiment is of cross-shaped cross-section, so that each of the bar elements 7 is pivotable about the ridge 14.
  • the purpose of providing the cut-outs 15 both at the front and rear ends is to make it possible to reverse the bar elements 7' end for end to compensate for uneven wear over the length of the respective bar elements. In other words, if such reversal is carried out then what in FIG. 1 is the rear end portion would become the front end portion and what is the front end portion would then become the rear end portion.
  • the support member 16 is mounted on the screw spindles 17 and can thus be shifted lengthwise of the elongation of the bar elements 7' towards and away from the circumference of the rotor 3. Such shifting of course results in concomitant shifting of the bar elements 7' and this makes possible an adjustment of the gap 18 between the leading ends of the bar elements 7 and the rotor 3.
  • each individual bar element 7 is supported on an adjusting screw for screw spindle 19.
  • These in turn are carried by an angle bracket 20 extending lengthwise of the axial extension of the rotor 3, and because of the arrangement of the bracket 20 with one arm thereof extending downwardly in front of the spindles 19, the latter are protected against damage from material being flung ofi the rotor 3.
  • a door 21 closes an opening in the housing 1 through which access may be had to the individual spindles 19 for varying the adjustment thereof.
  • the respectively associated front end portion of a bar element 7' is upwardly displaced, and vice versa. This is illustrated in FIG. 1.
  • the bar elements 7' may be located very closely side by side, or that they may be spaced from another and define gaps with each other.
  • the bracket 20 may be associated with a vibrator (not illustrated), or the vibrator may be associated with the individual bar elements 7 in another manner, in order to transmit vibratory motion to the bar elements 7' so that quantities of material of requisite size will fall through the gaps between adjacent bar elements 7 with the chute 7 thus also performing a screening function.
  • Reference numeral 22 defines a plate or analogous member which extends along but spaced from the upper or rear end portions of the bar elements 7'.
  • Theplate 22 is removably mounted and serves to prevent disconnection between the respective bar elements 7' and the support member 16. In other words, it prevents the bar elements 7' at their rear end portions from moving away from the support element 16 to the extent where the rib 14 would be withdrawn from the respective cut-out 15.
  • the plate 22 is removably mounted in known manner (not illustrated).
  • the bar elements 7' in sections for instance two longitudinally adjacent sections. These can be connected in suitable manner and the rear section can then be mounted rigidly with only the front section being subject to adjustment transversely of the general plane of the chute 7 by the spindles 19. It is also possible to mount the bracket height-adjustably in toto, so that all bar elements 7'or their front sections-can be raised or lowered simultaneously, aside from their individual adjustability. This has not been illustrated but it will be readily evident to those skilled in the art how the bracket 20 will have to be mounted in such a case.
  • the present invention provides for equalization of the wear of the rotor 3 and the contact portions 4, and therefore contributes to an increased life for these elements which in turn increases the economy of operation of rotary fragmentation mills or analogous apparatuses in conjunction with which the novel chute is utilized.
  • the chute can be used in conjunction with a variety of different apparatuses, and quite generally it should be understood that the chute can be used wherever it is essential or desirable that material advancing along the chute be supplied substantially evenly over the entire width of the chute, or that channeling of such material to a particular portion of the lateral extend of the chute be possible.
  • a material supply chute particularly for use in rotary fragmentation mills, comprising a plurality of discrete bar elements arranged in side-by-side relationship and together constituting a chute having a general plane, said bar elements each having an upper surface and said surfaces together constituting a slide surface having a material receiving end and a material discharging end spaced in a predetermined direction; and separate adjusting means associated with each bar element for selectively and individually adjusting the position of each of said bar elements with reference to said general plane in a sense varying the transverse contour of said slide surface so as to enable material advancing to said discharge end to be directed transversely of said direction to a desired location of said slide surface.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Chutes (AREA)
  • Crushing And Grinding (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US889590A 1969-01-03 1969-12-31 Material supply chute Expired - Lifetime US3659691A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT4169A AT315617B (de) 1969-01-03 1969-01-03 Zulaufrutsche für Rotoren oder Walzen aufweisende Zerkleinerungsmaschinen, insbesondere Schleuderprallmühlen

Publications (1)

Publication Number Publication Date
US3659691A true US3659691A (en) 1972-05-02

Family

ID=3479952

Family Applications (1)

Application Number Title Priority Date Filing Date
US889590A Expired - Lifetime US3659691A (en) 1969-01-03 1969-12-31 Material supply chute

Country Status (6)

Country Link
US (1) US3659691A (de)
JP (1) JPS4721027B1 (de)
AT (1) AT315617B (de)
DE (1) DE1960913C3 (de)
FR (1) FR2027729A1 (de)
GB (1) GB1291717A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274527A (en) * 1977-09-27 1981-06-23 Baker John H Apparatus and method for uniformly spreading a flowing stream of dry solids
FR2927268A1 (fr) * 2008-02-11 2009-08-14 Metso Minerals France Sa Sa Broyeur a percussion
US20130175137A1 (en) * 2011-03-01 2013-07-11 Gary W. Wilson Connection For A Grain Bin Allowing Rotation Of The Supply/Removal Chute
EP2698204A3 (de) * 2012-08-13 2014-04-09 Sandvik Intellectual Property AB Verschleißschutzkassette für Fülltrichterklappe
EP2737953A1 (de) * 2012-11-28 2014-06-04 Sandvik Intellectual Property AB Speisungsführungsvorrichtung für einen Brecherfülltrichter
WO2014146813A1 (en) * 2013-03-19 2014-09-25 Sandvik Intellectual Property Ab Crusher feed distributor
US20150122920A1 (en) * 2012-06-20 2015-05-07 Sandvik Intellectual Property Ab Method of feeding material to a horizontal shaft impact crusher, and a crushing device
US20220266347A1 (en) * 2019-09-13 2022-08-25 Lns Management Sàrl Device for adjusting the diameter of a guide channel for bars to be machined

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2516014C3 (de) * 1975-04-12 1986-05-28 Hazemag Dr. E. Andreas GmbH & Co, 4400 Münster Zerkleinerungsmaschine für Abfälle
GB8527184D0 (en) * 1985-11-05 1985-12-11 Ansec Design & Eng Ltd Mineral breaker
RU2396121C2 (ru) * 2007-04-26 2010-08-10 Открытое акционерное общество "Научно-исследовательский и проектно-конструкторский институт асбестовой промышленности" (ОАО "НИИпроектасбест") Дробилка роторная
DE102014216453B4 (de) * 2014-04-04 2018-02-22 Craco Gmbh Rotor
CN107737638A (zh) * 2017-11-03 2018-02-27 安徽奥邦新材料有限公司 一种进料斗设有缓冲结构的粉碎装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1591479A (en) * 1924-02-26 1926-07-06 John C Erickson Feed distributor
US2889119A (en) * 1949-05-11 1959-06-02 Hazemag Hartzerkleinerung Slinging impact breakers
US3106523A (en) * 1961-05-01 1963-10-08 Lefebvre Freres Limitee Grizzly bar feeder

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1591479A (en) * 1924-02-26 1926-07-06 John C Erickson Feed distributor
US2889119A (en) * 1949-05-11 1959-06-02 Hazemag Hartzerkleinerung Slinging impact breakers
US3106523A (en) * 1961-05-01 1963-10-08 Lefebvre Freres Limitee Grizzly bar feeder

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274527A (en) * 1977-09-27 1981-06-23 Baker John H Apparatus and method for uniformly spreading a flowing stream of dry solids
FR2927268A1 (fr) * 2008-02-11 2009-08-14 Metso Minerals France Sa Sa Broyeur a percussion
US20130175137A1 (en) * 2011-03-01 2013-07-11 Gary W. Wilson Connection For A Grain Bin Allowing Rotation Of The Supply/Removal Chute
US8651258B2 (en) * 2011-03-01 2014-02-18 Wch Industries, Llc Connection for a grain bin allowing rotation of the supply/removal chute
US20150122920A1 (en) * 2012-06-20 2015-05-07 Sandvik Intellectual Property Ab Method of feeding material to a horizontal shaft impact crusher, and a crushing device
US10751724B2 (en) * 2012-06-20 2020-08-25 Sandvik Intellectual Property Ab Method of feeding material to a horizontal shaft impact crusher, and a crushing device
EP2698204A3 (de) * 2012-08-13 2014-04-09 Sandvik Intellectual Property AB Verschleißschutzkassette für Fülltrichterklappe
WO2014072135A1 (en) * 2012-11-08 2014-05-15 Sandvik Intellectual Property Ab Crusher feed hopper wear protection cassette
CN104812494B (zh) * 2012-11-08 2017-06-06 山特维克知识产权股份有限公司 破碎机进料斗磨损保护盒
CN104812494A (zh) * 2012-11-08 2015-07-29 山特维克知识产权股份有限公司 破碎机进料斗磨损保护盒
AU2013343851B2 (en) * 2012-11-08 2017-09-28 Sandvik Intellectual Property Ab Crusher feed hopper wear protection cassette
EP2737953A1 (de) * 2012-11-28 2014-06-04 Sandvik Intellectual Property AB Speisungsführungsvorrichtung für einen Brecherfülltrichter
WO2014082822A3 (en) * 2012-11-28 2014-09-18 Sandvik Intellectual Property Ab Crusher hopper feed guide assembly
WO2014146813A1 (en) * 2013-03-19 2014-09-25 Sandvik Intellectual Property Ab Crusher feed distributor
US9486805B2 (en) 2013-03-19 2016-11-08 Sandvik Intellectual Property Ab Crusher feed distributor
CN105050722A (zh) * 2013-03-19 2015-11-11 山特维克知识产权股份有限公司 破碎机进料分配器
US20220266347A1 (en) * 2019-09-13 2022-08-25 Lns Management Sàrl Device for adjusting the diameter of a guide channel for bars to be machined
US12202047B2 (en) * 2019-09-13 2025-01-21 Lns Management Sàrl Device for adjusting the diameter of a guide channel for bars to be machined

Also Published As

Publication number Publication date
DE1960913B2 (de) 1974-01-03
DE1960913A1 (de) 1970-07-16
FR2027729A1 (de) 1970-10-02
GB1291717A (en) 1972-10-04
AT315617B (de) 1974-06-10
JPS4721027B1 (de) 1972-06-14
DE1960913C3 (de) 1974-07-25

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